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How-To Geek is where you turn when you want experts to explain technology. When should I calibrate the battery? Wondering if your smartphone battery needs to be calibrated? Your smartphone suddenly shuts down even after it showed there was enough charge left. If your charging percentage remains stuck at a single point for long periods of time. Your smartphone is really old, and you suspect the battery stats shown are inaccurate.
Before you calibrate your smartphone battery Sometimes, it is simply easier and better to replace your smartphone battery than to flog an old horse and try calibrating them. A swollen battery is easy to spot. Additionally, calibrating the battery is not an all-weather fix to any battery-related issue. How to calibrate the battery on Android smartphones? Discharge your phone fully until it turns itself off. Turn it on again and let it turn itself off. Plug your phone into a charger and, without turning it on, let it charge until the on-screen or LED indicator says percent.
Unplug your charger. Turn your phone on. It's likely that the battery indicator won't say percent, so plug the charger back in leave your phone on and continue charging until it says percent on-screen as well. Unplug your phone and restart it. If it doesn't say percent, plug the charger back in until it says percent on screen.
Repeat this cycle until it says percent or as close as you think it's going to get when you start it up without it being plugged in. Now, let your battery discharge all the way down to 0 percent and let your phone turn off again. Fully charge the battery one more time without interruption and you should have reset the Android system's battery percentage. A pop-up menu appears with an option that says 'Quick Start'. Press 'Quick Start" and then press 'OK.
Wait for the display to power back on again and check if the battery percentage has gone down. Power the phone off and then turn it on again and then unplug the charger. Scroll down to "batterystats.
Exit the menu and restart the phone. Also Read How to fix a phone that won't charge properly How to charge your Android phone battery faster That's it. This article was last updated in June Older comments have been retained.
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Submit Cancel. For the most accurate reading, the chip needs to "learn" the battery's capacity. If the battery drains completely to 0 percent, then fully charges to percent, the chip then learns the capacity.
As you use the phone more, the battery drains and recharges at multiple points. This multitude of recharges leads the chip to miss its accurate reading. In short, at this point, the chip and the chemical capacity are not calibrated. To get an accurate idea of the battery's capacity, you need to calibrate or re-calibrate it. Battery calibration is a simple task; we covered how to calibrate an iPhone battery.
It's basically a full cycle of recharging. First, drain your phone's battery completely. Don't charge it at any point while it's draining. Let the phone keep working till it shuts itself off. Once the phone has shut itself off, restart it so it shuts off again. Even though the battery was at 0 percent, it has a few reserves left.
Now, while the phone is off, charge it to percent. It's safe to use quick chargers for this, but make sure you hit percent. Once it's fully charged, unplug it and boot your phone. Android might not say it's at percent, and that's okay. In that case, plug the charger again and let it get to percent. Then unplug it. This cycle of full drain and recharging lets the chip calibrate its readings with the battery's charge cycle.
Battery calibration is purely about an accurate reading of battery life. It does not improve battery life. That's an old myth left over from the years before we had lithium-ion batteries, smart chips, and smart sensors in phones and laptops.
Battery calibration does not indicate the health of your Android battery either. Wear and tear on a battery does affect its calibration, so it's a sign of how much use it's been through.
But battery health doesn't come purely by amount of usage. Another myth about battery calibration, especially with Android phones, revolves around the BatteryStats.
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